DE1800587C - Closure device for tubes - Google Patents

Description

1 2

The invention relates to a closure- and corresponding parts are provided in all figures with a device for tubes, which are captive and easily provided with the same reference numerals. It shows
is to operate, F i g. 1 in section the closure device in tubes are usually characterized by an unlocked state,

screw cap closed, but what the 5 F i g. 2 in section the same locking device

The serious disadvantage is that it closes in the open state.

Both hands are necessary for the tube. In addition, in the figures, only the locking mechanism locking caps are easily lost; so falls z. B. device facing the end of the plastically deformable in toothpaste tubes the cap not infrequently drawn jacket 1 of the tube, which with one in the drain of the sink. io filling 2 is provided with a cosmetic cream. There has been no lack of attempts to create a captive The conically shaped end 3 of the tube has closure devices for tubes, in a known manner a greater wall thickness, and numerous embodiments are known to have the same cylindrical end piece 4. In a tee by the USA.-patent document, a hollow tube 5 is axially slidably inserted 1,940,719 known embodiment is that is is the upper at its end closed and a closure cap upstanding by an obliquely sawn from round wire extending to its axis end face 6 of the coil spring in Closed position.

presses, the coil spring against the The interior 7 of the hollow tube is with a

The tube wall or parts connected to it are connected to the side opening 8 in a communicating manner, see above

supports. Pressing the tube opens the ao that in FIG. 2 shown open position

Closure device, and the contents of the tube so that the filling of the tube flows through this lateral opening 8

long off how the pressure lasts; then it can escape when the tube is pressed.

Closure device by pressure of a built-in The hollow tube 5 has at its inner end a Spring closed again. The previously known outwardly projecting zone 9, its end face

however, these embodiments do not fully extend towards the inner end in the open state

satisfied and therefore not in practice due to the cylindrical

can put. drical end piece 4 applies and thereby a

The invention is intended to solve the problem of falling out of the sliding locking piece

be, a simple ;:: here, in the manufacture of cheaper prevented. The inner end of this locking piece

and at the same time sufficiently reliable locking device is made of an elastically deformable material

direction to produce. existing ring spring 11 connected, the outer

The invention relates to a locking device edge zone against the inside of the front end 3

for tubes, hc-i which is supported in the outlet of the.

Tube contents provided opening an in axial as soon as a compression of the lateral Direction displaceable, on the outer end face 35 walls of the tube inside an overpressure closed hollow tube is arranged, which is created by a, the closure device against the arranged concentrically to it, to the internal effect of the spring force of the Rin ^ the 11 in the axial wall of the tube shoulder supporting spring moved outwards until the lateral is pulled inside and the wall of which one with the opening 8 over the side wall of the end piece 4 inside the opening communicating with the tube protrudes una 40 and the filling 2 emerges from the tube one the axial displacement in the outward direction.

has limiting projection. Here is the axial displacement of the locking device

Arrangement made such that the through is limited by the end face 10. As soon as the Compression of the side walls of the tube stops pressing on the side walls of the tube,

occurring overpressure and the thereby caused 45 is the ring spring U due to its spring force again

Displacement of the hollow tube to the outside of which the locking device in the axial direction

Pull the side opening over the side cover in front of the inside of the tube. This will make the opening 8

protrudes. In this above-described closure again covered by the side wall of the end piece 4,

According to the invention, the device is the spring as a ring and a further outlet of the tube contents is

shaped, manufactured in one piece with the hollow tube 50 prevents.

Ring spring formed, the outer edge zone of which should be the tube with a substance of this consistency

supported against the inside of the tube and filled with one that by the spring force of the ring spring

annular thin lip is provided. By this 11 an automatic pulling in of the locking device

thin lip is achieved that the annular direction is not guaranteed with certainty then

The spring washer rests well against the inner wall of the tube

and thereby an undesired entry of the tube end face 6 of the closure device into this

contents »into the inside of the tube located above the ring spring. To the

Cavity is prevented. when pushing in the locking device he * It is glinslig if the outer face of the following displacement of individual zones of the filling 2 Closing device on the side, which is to facilitate, has to pull the inside of the tube

facing the opening, a marking facing face 12 of the hollow cylinder designed as a *

shows. For this purpose, it has proven advantageous ats if the hollow tube 5 is in the form of a cone, which

when the end face is oblique to the axis of the hollow tube and concentric to the axis of the hollow tube and its

runs and on which the side opening pulls-tip lies inside the tube,

turned side is furthest out. 6 $ In order to open the tube by pushing

In the following, the invention will be seen in connection with the side walls

tion with which side of the tube the filling 2 will emerge, which represents an execution play, »Described nematically drawn figures

eschrleben. One is the front end of the locking device with one

Marking provided. In the illustrated embodiment the tip 13, which is easy to feel, serves as a marker.

Claims (2)

Patent claims: 1. Closure device for tubes, in which the intended for the exit of the tube contents Opening a hollow tube which is displaceable in the axial direction and is closed on the outer end face is arranged, which is arranged by a concentric to it, on the inner wall of the Tube shoulder supporting spring is pulled inward and its wall is one with the Inside the tube has a communicating opening and an axially; Shift in direction having outwardly limiting projection, the arrangement being made such that at the compression of the side walls of the tube and the resulting overpressure of the hollow tube (II) is trained, its outer rim
lein trimmed the inside of the tube and is provided with an annular thin lip. 2 closure device for tubes according to claim 1, characterized in that on the the side opening (8) »f ^^ g ** / End face (6) this one marking (13) aut- ^t closure device for tubes according Ansoruch 1 and 2, characterized in that the ^ surface (6) oblique to the axis of the hollow tube (ί ν r au t ^(uL on L of the lateral opening (8) side facing furthest outward Hegt. 1 sheet of drawings